CLAS physics database search results Measurement E195M157 CLAS12 RG-K Daniel S. Carman 2022 W P'_x Data errors Systematic errors GeV 1.64 0 0 0 1.72 1 2.8236 0.17862 1.8 -0.70238 0.34205 0.09929 1.88 -0.74583 0.29073 0.08881 1.96 -0.11663 0.30281 0.09441 2.04 -0.00955 0.37261 0.10455 2.12 1 0.42586 0.10423 2.2 -0.64777 0.4564 0.09711 2.28 0.60181 0.50456 0.0905 2.36 0.88461 0.59506 0.09197